script.
  (function(e,t){var n=e.amplitude||{_q:[],_iq:{}};var r=t.createElement("script")
  ;r.type="text/javascript";r.async=true
  ;r.src="https://cdn.amplitude.com/libs/amplitude-3.8.0-min.gz.js"
  ;r.onload=function(){if(e.amplitude.runQueuedFunctions){
  e.amplitude.runQueuedFunctions()}else{
  console.log("[Amplitude] Error: could not load SDK")}}
  ;var i=t.getElementsByTagName("script")[0];i.parentNode.insertBefore(r,i)
  ;function s(e,t){e.prototype[t]=function(){
  this._q.push([t].concat(Array.prototype.slice.call(arguments,0)));return this}}
  var o=function(){this._q=[];return this}
  ;var a=["add","append","clearAll","prepend","set","setOnce","unset"]
  ;for(var u=0;u<a.length;u++){s(o,a[u])}n.Identify=o;var c=function(){this._q=[]
  ;return this}
  ;var l=["setProductId","setQuantity","setPrice","setRevenueType","setEventProperties"]
  ;for(var p=0;p<l.length;p++){s(c,l[p])}n.Revenue=c
  ;var d=["init","logEvent","logRevenue","setUserId","setUserProperties","setOptOut","setVersionName","setDomain","setDeviceId","setGlobalUserProperties","identify","clearUserProperties","setGroup","logRevenueV2","regenerateDeviceId","logEventWithTimestamp","logEventWithGroups","setSessionId"]
  ;function v(e){function t(t){e[t]=function(){
  e._q.push([t].concat(Array.prototype.slice.call(arguments,0)))}}
  for(var n=0;n<d.length;n++){t(d[n])}}v(n);n.getInstance=function(e){
  e=(!e||e.length===0?"$default_instance":e).toLowerCase()
  ;if(!n._iq.hasOwnProperty(e)){n._iq[e]={_q:[]};v(n._iq[e])}return n._iq[e]}
  ;e.amplitude=n})(window,document);

  amplitude.getInstance().init('!{ amplitudeToken }');

  // 替换以上的sdk
  window.amplitudeEnable = !{ !DEBUG };